PYSEC-2026-1795 pip's fallback tar extraction doesn't check symbolic links point to extraction directory

When extracting a tar archive pip may not check symbolic links point into the extraction directory if the tarfile module doesn't implement PEP 706. Note that upgrading pip to a "fixed" version for this vulnerability doesn't fix all known vulnerabilities that are remediated by using a Python versi...

pip's fallback tar extraction doesn't check symbolic links point to extraction directory

When extracting a tar archive pip may not check symbolic links point into the extraction directory if the tarfile module doesn't implement PEP 706. Note that upgrading pip to a "fixed" version for this vulnerability doesn't fix all known vulnerabilities that are remediated by using a Python versi...

PYSEC-2026-1784 Picklescan has a missing detection when calling built-in python idlelib.autocomplete.AutoComplete.get_entity

Summary Using idlelib.autocomplete.AutoComplete.getentity, which is a built-in python library function to execute remote pickle file. Details The attack payload executes in the following steps: First, the attacker craft the payload by calling to idlelib.autocomplete.AutoComplete.getentity functio...

PYSEC-2026-1792 Picklescan is missing detection when calling built-in python ensurepip._run_pip

Summary Using ensurepip.runpip function, which is a built-in python library function to execute remote pickle file. Details The attack payload executes in the following steps: First, the attacker craft the payload by calling to ensurepip.runpip function in reduce method Then when the victim after...

PyPDF's Manipulated FlateDecode streams can exhaust RAM

ImpactAn attacker who uses this vulnerability can craft a PDF which leads to the RAM being exhausted. This requires just reading the file if a series of FlateDecode filters is used on a malicious cross-reference stream. Other content streams are affected on explicit access. PatchesThis has been...

Aim vulnerable to Cross-site Scripting

Cross-site Scripting XSS in aimhubio Aim 3.28.0 allows remote attackers to execute arbitrary JavaScript in victims browsers via malicious Python code submitted to the /api/reports endpoint, which is interpreted and executed by Pyodide when the report is viewed. No sanitisation or sandbox...

AIOHTTP is vulnerable to HTTP Request/Response Smuggling through incorrect parsing of chunked trailer sections

SummaryThe Python parser is vulnerable to a request smuggling vulnerability due to not parsing trailer sections of an HTTP request. ImpactIf a pure Python version of aiohttp is installed i.e. without the usual C extensions or AIOHTTPNOEXTENSIONS is enabled, then an attacker may be able to execute...

PYSEC-2026-1087 Aim vulnerable to Cross-site Scripting

Cross-site Scripting XSS in aimhubio Aim 3.28.0 allows remote attackers to execute arbitrary JavaScript in victims browsers via malicious Python code submitted to the /api/reports endpoint, which is interpreted and executed by Pyodide when the report is viewed. No sanitisation or sandbox...

PYSEC-2026-1104 AIOHTTP is vulnerable to HTTP Request/Response Smuggling through incorrect parsing of chunked trailer sections

Summary The Python parser is vulnerable to a request smuggling vulnerability due to not parsing trailer sections of an HTTP request. Impact If a pure Python version of aiohttp is installed i.e. without the usual C extensions or AIOHTTPNOEXTENSIONS is enabled, then an attacker may be able to execu...

PYSEC-2026-1590 Lord of Large Language Models vulnerable to Observable Discrepancy attack via authenticate_user function

The parisneo/lollms repository is affected by a timing attack vulnerability in the authenticateuser function within the lollmsauthentication.py file. This vulnerability allows attackers to enumerate valid usernames and guess passwords incrementally by analyzing response time differences. The...

PYSEC-2026-1616 MCP Python SDK vulnerability in the FastMCP Server causes validation error, leading to DoS

A validation error in the MCP SDK can cause an unhandled exception when processing malformed requests, resulting in service unavailability 500 errors until manually restarted. Impact may vary depending on the deployment conditions, and presence of infrastructure-level resilience measures. Thank y...

PYSEC-2026-1618 MCP Python SDK has Unhandled Exception in Streamable HTTP Transport, Leading to Denial of Service

If a client deliberately triggers an exception after establishing a streamable HTTP session, this can lead to an uncaught ClosedResourceError on the server side, causing the server to crash and requiring a restart to restore service. Impact may vary depending on the deployment conditions, and...

MCP Python SDK vulnerability in the FastMCP Server causes validation error, leading to DoS

A validation error in the MCP SDK can cause an unhandled exception when processing malformed requests, resulting in service unavailability 500 errors until manually restarted. Impact may vary depending on the deployment conditions, and presence of infrastructure-level resilience measures.Thank yo...

PYSEC-2026-1806 protobuf-python has a potential Denial of Service issue

Summary Any project that uses Protobuf pure-Python backend to parse untrusted Protocol Buffers data containing an arbitrary number of recursive groups, recursive messages or a series of SGROUP tags can be corrupted by exceeding the Python recursion limit. Reporter: Alexis Challande, Trail of Bits...

protobuf-python has a potential Denial of Service issue

SummaryAny project that uses Protobuf pure-Python backend to parse untrusted Protocol Buffers data containing an arbitrary number of recursive groups, recursive messages or a series of SGROUP tags can be corrupted by exceeding the Python recursion limit.Reporter: Alexis Challande, Trail of Bits...

PYSEC-2026-1088 Aim Vulnerable to Sandbox Escape Leading to Remote Code Execution

A vulnerability classified as critical was found in aimhubio aim up to 3.29.1. This vulnerability affects the function RestrictedPythonQuery of the file /aim/storage/query.py of the component runview Object Handler. The manipulation of the argument Query leads to sandbox issue. The attack can be...

Issue with Amazon Redshift Python Connector and the BrowserAzureOAuth2CredentialsProvider plugin

SummaryAmazon Redshift Python Connector is a pure Python connector to Redshift i.e., driver that implements the Python Database API Specification 2.0.When the Amazon Redshift Python Connector is configured with the BrowserAzureOAuth2CredentialsProvider plugin, the driver skips the SSL certificate...

MAL-2026-6945 Malicious code in jsonschemavalidation (PyPI)

--- -= Per source details. Do not edit below this line.=- Source: amazon-inspector eae82aa94c358f1f00f8a12e8b583cee82efdcf09d2f80263e6851ac0fec98f3 The PyPI project jsonschemavalidation builds a wheel whose installed top-level package is literally jsonschema tool.hatch.build.targets.wheel package...

Malicious code in jsonschemavalidation (PyPI)

--- -= Per source details. Do not edit below this line.=- Source: amazon-inspector eae82aa94c358f1f00f8a12e8b583cee82efdcf09d2f80263e6851ac0fec98f3 The PyPI project jsonschemavalidation builds a wheel whose installed top-level package is literally jsonschema tool.hatch.build.targets.wheel package...

Malicious code in paysafe-api (PyPI)

--- -= Per source details. Do not edit below this line.=- Source: amazon-inspector 9d9cc9039ffa3e8cadc8a24b0ccd83bcc8eca2fe88e25f35b2022cc1957220fb paysafe-api impersonates the Paysafe payments provider package name, description, author 'Paysafe Developer Team', and use of api.paysafe.com /...